Step 1: An overview of value-chain analysis
Value chains may be defined in two ways: (1) within a company they describe the various value-added stages from purchasing materials to distributing, selling, and servicing the final product (Porter’s 1985 concept),[3] and (2) they also delineate the value-added stages from raw material to end-user as a product is manufactured and distributed, with each stage representing an industry.[4] For convenience, we will refer to these two definitions as
‘‘internal’’ and ‘‘external’’ value chains, respectively.
The internal value chain is a key concept in the field of strategic management that has been thoroughly explored. In contrast, the external value chain has not been studied as extensively. The external value chain consists of the important upstream/supply and downstream/distribution processes. However, even though these processes occur outside the corporation, the strategic opportunities they reveal and areas of risk they highlight warrant careful study. Consider:
Outsourcing – involves transferring certain primary or support functions in the internal value chain to the external value chain.
B Vertical integration – involves taking control of one or more additional stages of the external value chain and